Description

The MITUTOYO 184-303S is a 28-piece feeler gage set designed for precise gap and clearance measurement in mechanical and industrial applications. Each tapered leaf spans a thickness range of 0.05 mm to 1.00 mm, allowing technicians to select the exact blade needed for a given clearance check. The leaves measure 150 mm in length and 13 mm in width, constructed from tempered steel for durability and resistance to deformation under repeated use. This set is suited for HVAC technicians, machinists, mechanics, and maintenance professionals who require accurate feeler gages for valve clearance, bearing gaps, and component alignment checks.

The 184-303S is used across residential and commercial maintenance environments wherever precise gap measurement is required. Typical applications include checking valve-to-seat clearances, spark plug gaps, compressor tolerances, and general mechanical assembly verification. The 28-leaf range provides enough coverage to handle most standard clearance specifications without needing a supplementary set. The tapered leaf style makes it easier to insert blades into tight or angled access points.

Key Features

28 tapered leaves covering 0.05 mm to 1.00 mm thickness range
Leaf length of 150 mm and width of 13 mm for reliable reach into confined spaces
Tempered steel construction resists bending and wear during repeated use
Tapered leaf style aids insertion into angled or restricted clearance points
Compact closed length of 150 mm for easy storage and portability

Compatibility

Designed as a general-purpose feeler gage set suitable for mechanical maintenance, HVAC service, and industrial assembly applications requiring gap measurements in the 0.05 mm to 1.00 mm range.

Installation Notes

Feeler gages require no installation but should be handled by qualified technicians familiar with clearance measurement procedures. Always power down or shut off equipment before inserting a feeler gage into a rotating or pressurized assembly. Keep leaves clean and lightly oiled to prevent corrosion. Do not force a blade into a gap narrower than the leaf thickness, as this can permanently deform the leaf and compromise measurement accuracy.